Getting Things Done (commonly abbreviated as GTD) is a method created by David Allen, and described in a book of the same name. Both “Getting Things Done” and “GTD” are USPTO registered trademarks of the David Allen Company (numbers 2431583 and 3591195).
GTD rests on the principle that a person needs to move tasks out of the mind by recording them externally. That way, the mind is freed from the job of remembering everything that needs to be done, and can concentrate on actually performing those tasks.
Author David Allen
Publication date 2002
Pages 267 pp
ISBN ISBN 978-0142000281
More Info.: Getting Things Done (Wikipedia)